New 2026 GMC Sierra 3500 HD AT4 For Sale Warrenton, VA

This 2026 GMC Sierra 3500HD AT4 in gray delivers the capability and comfort you need for serious work and weekend adventures alike.- Duramax 6.6L V8 Turbodiesel engine with 470 hp and 975 lb-ft of torque- 10-Speed Automatic transmission with 4WD- Bose Premium 7-Speaker Sound System with SiriusXM and 360L Trial Subscription- Premium GMC Infotainment System with 13.4 diagonal display- 15 Diagonal Multicolor Head-Up Display- Automatic Emergency Braking with Front Pedestrian Braking- HD Surround Vision with Bed View Camera and Trailer Camera Provisions- Heated and Ventilated Front Seats with 10-Way Power Adjusters and Lumbar Support- Heated Second Row Outboard Seats- Lane Departure Warning System with Automatic High Beams- Off-Road Suspension with 2-Speed Active Transfer Case and Hill Descent Control- Wireless Phone Projection and Wireless Charging- Spray-On Pickup Bedliner with GMC Logo- 20 High Gloss Black 8-Spoke Aluminum WheelsThe AT4 package elevates this truck with purposeful styling and genuine off-road capability. You'll appreciate the Gloss Black grille insert bars, black GMC emblems, and the commanding presence this truck commands on any terrain. The all-weather floor liners keep your cab protected while maintaining that premium feel inside the cabin.Engineering excellence runs through every system on this Sierra 3500HD. The heavy-duty 80-amp-hour battery, dual alternators, and engine block heater ensure reliability in demanding conditions. The exhaust brake and off-road high-clearance step demonstrate the attention to detail that distinguishes this truck from ordinary pickups.Your daily driving experience benefits from multiple premium conveniences designed for the modern professional. Keyless open and start, a heated steering wheel, and remote vehicle starter set the tone for your morning commute. The auto-dimming rearview mirror with integrated camera provides enhanced visibility when you need it most. Navigation and connectivity flow seamlessly through the premium infotainment system with wireless phone projection.Safety priorities are evident throughout this truck's design. The automatic emergency braking system, forward collision alert, rear cross traffic alert, and trailer side blind zone alert work together to protect you and your passengers. The ultrasonic front and rear park assist takes the stress out of maneuvering in tight spaces.This Sierra 3500HD AT4 represents the full-size diesel truck experience without compromise. When you're ready to explore what this truck can do for your work or lifestyle, come see it in person.